Seagate ST4000VM000 Video 3.5 HDD Product Manual (formerly Pipeline HD) - Page 33

Identify Device command, Description, Value, Command name, Command code in hex

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www.seagate.com Serial ATA Interface Table 7 Supported ATA commands (continued) Command name Command code (in hex) Write Multiple C5H Write Multiple Extended 39H Write Multiple FUA Extended CEH Write Sectors 30H Write Sectors Without Retries 31H Write Sectors Extended 34H Write Stream DMA Extended 3AH Write Stream Extended 3BH Write Uncorrectable 45H 4.3.1 Identify Device command The Identify Device command (command code ECH) transfers information about the drive to the host following power up. The data is organized as a single 4096-byte block of data, whose contents are shown on page 30. All reserved bits or words should be set to zero. Parameters listed with an "x" are drive-specific or vary with the state of the drive. The following commands contain drive-specific features that may not be included in the Serial ATA specification. Table 8 Identify Device commands Word 0 1 2 3 4 5 6 7-9 10-19 20 21 22 23-26 27-46 Description Configuration information: • Bit 15: 0 = ATA; 1 = ATAPI • Bit 7: removable media • Bit 6: removable controller • Bit 0: reserved Number of logical cylinders ATA-reserved Number of logical heads Retired Retired Number of logical sectors per logical track: 63 Retired Serial number: (20 ASCII characters, 0000H = none) Retired Retired Obsolete Firmware revision (8 ASCII character string, padded with blanks to end of string) Drive model number: (40 ASCII characters, padded with blanks to end of string) Value 0C5AH 16,383 C837H 16 0000H 0000H 003FH 0000H ASCII 0000H 0000H 0000H x.xx Video 3.5 HDD Product Manual, Rev. H 33

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Video 3.5 HDD Product Manual, Rev. H
33
www.seagate.com
Serial ATA Interface
4.3.1
Identify Device command
The Identify Device command (command code EC
H
) transfers information about the drive to the host following
power up. The data is organized as a single 4096-byte block of data, whose contents are shown on page
30. All
reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or vary with the state
of the drive.
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Write Multiple
C5
H
Write Multiple Extended
39
H
Write Multiple FUA Extended
CE
H
Write Sectors
30
H
Write Sectors Without Retries
31
H
Write Sectors Extended
34
H
Write Stream DMA Extended
3A
H
Write Stream Extended
3B
H
Write Uncorrectable
45
H
Table 8
Identify Device commands
Word
Description
Value
0
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
0C5A
H
1
Number of logical cylinders
16,383
2
ATA-reserved
C837
H
3
Number of logical heads
16
4
Retired
0000
H
5
Retired
0000
H
6
Number of logical sectors per logical track: 63
003F
H
7–9
Retired
0000
H
10–19
Serial number: (20 ASCII characters, 0000
H
= none)
ASCII
20
Retired
0000
H
21
Retired
0000
H
22
Obsolete
0000
H
23–26
Firmware revision
(8 ASCII character string, padded with blanks to end of string)
x.xx
27–46
Drive model number:
(40 ASCII characters, padded with blanks to end of string)
Table 7
Supported ATA commands
(continued)
Command name
Command code (in hex)